Respuesta :

Answer:

Theyre both going to be 27.

Step-by-step explanation:

2n+21=4n+15

-2n       -2n

21=2n+15

-15      -15

[tex]\frac{6}{2}[/tex]=[tex]\frac{2n}{2}[/tex]

3=n

2n+21

2(3)+21=27

4n+15

4(3)+15=27

:)